bailey



(No Model.) 2 Sheets-Sheet 1.

A. BAILEY & E. M. JOHNSON. SBGTIONAL WATER TUBE BOILER.

No. 550,578. Patented Dec. 3, 1895.

'. INVENTORS 075%; BY 'Z/W' ATTORNEY ANDREW BJERARAM. PHUYULTHQWASNINGWNJL,

' (NO Model.)

-2 Sheets-Sheet 2.

A. BA'ILEY,& E. M. JOHNSON. SEGTIONAL WATER TUBE BOILER.

N0.550,578.- PatentedDec. 3,1895.

'Plg e.

f 1/ E 5 W235? M BY 635M ATTORNEY AN DREW B.GRMIAM.PHOTO-UTHQWASMINGTDN-UC.

AUGUSTUS BAILEY, OF YONKERS, AND ELIAS M, JOHNSON, OF NEIV YORK, ASSIGNORS OF ONE-THIRD TO STEPHEN WV. BALDIVIN, OF

NEW YORK, N. Y.

SECTIONAL WATER-TUBE BOILER.

SPECIFICATION forming part of Letters Patent No. 550,578, dated December 3, 1895.

Application filed May 31, 1893- Serial No. 476,173. (No mode h) To all whom it may concern.-

Be it known that we, AUcUsrUs BAILEY, of Yonkers, in the county of Wetchester, and ELIAS M. JOHNSON, of the city and county of New York, in the State of New York, have invented certain new and useful Improvements in Sectional VVater-Tube Boilers, which invention is fully set forth and illustrated in the following specification and accompanying drawings.

The object of this invention is to provide a boiler of large potential compared to space occupied which shall at the same time have a high degree of evaporative efficiency, coupled with the production of steam not only dry in quality, but superheated to any degree capable of use in the service to which the boiler may be employed. The boiler is designed in particular for comparativelysmall powers, such as maybe required in boats and yachts of moderate dimensions; but the invention may be extended to larger purposes and powers.

The invention will first be described in detail and then particularly set forth in the claims.

In the accompanying drawings, Figure 1 shows in front elevation a boilerconstructed according to our invention with the front casing of the boiler removed. a Fig. 2 shows the boiler in side elevation with one side casing removed. Fig. 3 illustrates in plan one of the boiler-tubes detached, showing the radial distribution of pins upon its surface, more particularly hereinafter described. In Figs. 1 and 2 said pins, for the sake of avoiding needless repetition of similar parts, are omitted from all but a single tube in said figures, respectively.

In the several figures of the drawings the different parts are indicated by reference-let ters, as follows, like parts in each figure being indicated by like letters.

A series of vertical tubes A, of cast-steel or other suitable metal, provided with project ing pins (1 on their exterior or fire surfaces, are assembled-and connected in the followin gdescribed manner: Each tube,A at its sides, near its top and bottom, is constructed with short pipes 19 c of different diameters, forming a male and female jointed opening for union in a series of parallel lines or rows, which rows,

as shown in the drawings, are set transversely of the furnace. Said tubes are secured to gether at top and bottom by a long bolt d, passing transversely through said tubes and said pipes, their joints being made tight by inserting therein washers 6, preferably of copper, and setting up on the nuts f on the ends of the bolts cl. Between theoutside tube A of each row and the nuts f at the lower joints of the tubes an annular end piece g is in serted, forming a socket-joint with each outer tube A, and to each of said end pieces is conrow, or from such a number in each row as may be deemed necessary, a pipe B leads through a short socket-joint C, secured by a single bolt D to a pipe E, which pipe is connected, as shown in Fig. 1, to the stean1-drum F, situated within the smoke-pipe G. The pipe E, or an extension of it, passes into said drum upward, terminating in a downward bend H. From near the base of the steamdrum F downcast pipes K lead downward through short socket-joints M, secured each by a single bolt N to the annular sections g, through which said downcasts communicate with the water-legs h, into which legs the feed-water may be introduced through any approved heaters or furnace-coils, such as are in common use. Near the top of the steam-drum F is placed the steam-pipe P, I which may lead in any one of the several di rections indicated in the drawings, as preferred.

The whole boiler is suitably inclosed Within a light sheet-metal casing T, lined with any approved non-conducting material V-suclil as firebrick, asbestos, or other equivalent IOO material-a suitable furnace-doorway X and ash-pit Y, with suitable doors therefor, (not shown,) of any approved construction, being provided.

The enforced course of the circulation of this boiler is as follows: When steam is for'nr ing in the boiler, the steam and water entrained therewith, if any, pass up from the tubes A into and through the pipe E, whence the steam escapes from the water, which falls to the bottom of the drum, leaving dry steam above it. The water then escapes from the drum, through the downcasts K, to the waterlegs h, whence the same round of circulation continues upward and downward.

The water-level in the tubes A may be vabe omittearrom the tubes A, but their piesence occupies practically no additional space and materially adds. to the efficient heat-ab sorbing-surface of this type of boiler, in which practically the whole heating and steam-generating surface is tube-surface.

While it is preferable toconnectthe tubes A by meansof both lines of socket-joints, yet

the upper lines jof said joints and their bolts may be omitted without departing from this invention.

removing anyone line or nest of tubes for repair or renewal no screW jOints arerequired to be unscrewed or broken. move any line or nest of tubes, it is only necessary to remove the top-casing of the boiler and then the leg-bolts n and the short socketb'olts D and N fromthe pipes connecting the particular line of tubes with the steam-drum.

Any nest of tubeswhen thus, disconnected can then be lifted clearflof its other assembled elements and removed for replacement or re- P 7 vi a i We do not confine ourselves to the particular arrangements of furnaceand tubes indicated in the drawings, as the furnace, instead In order to're- I ofbeing located below the tubes, may be 10- for generating comparatively-small powers, may be largely Varied in size, if desired, and any desired number maybe conveniently assemb'led to, work o in battery.

These boilers, though particularly adapted aving thus fully described our said inven' tion, we 'claim'- 7 1. In a water-tube-boiler, the combination of the following named parts: lines of vertical tubes set transversely of the furnace, each tube in each line secured to a fellow-tube by a socket-joint formed thereon and by a bolt passing transversely through said tubes and through the interior of said joints from end to end of each line of tubes; water-legs for said tubes set longitudinally of the furnace; a steam drum; and downcast pipes connecting said drum and water-legs; whereby communication is established for the circulation of water and steam between the interiors of said tubes, said drum and water-legs substantially as set forth.

2. In a water-tube-boiler, the combination of the following named parts: lines of vertical tubes set transversely of the furnace and provided on theirexternal surfaces with. projecting pins, each tube in each line secured to a fellow-tube bya socket-j oint formed thereon and by a bolt passing transversely through said tubes and through the interiorof said joints from end to end of each line of tubes; water-legs for said tubes set longitudinally of the furnace; [a steam-drum; and downcast pipes connecting said drum and water-legs,

8. Inawater-tube-boiler, the combination of the following named parts: lines of vertical tubes of cast-metal, each of saidtnbes having cast therewith, on opposite sides thereof, short pipes of different diameters, each pipe of smaller diameter entering the wiresponding pipe of larger diameter of a arrowtube and forming male and female joints; a bolt passing through the interior of said oints fromend to end of each line of tubes; w'at'er l .4 g g v} g legs for said tubes; a steamdrumi; and down- In taking this boilerapart or n separately cast-pipes connecting said drum and waterlegs; whereby communication is established for the circulation of water and steam be-' tween the interiors of the tubes and said drum and water-legs, substantially as set forth.

4. A Water-tube' boiler provided with vertical tubes united by socket joints, and through bolts, and connected to a series of short sections bolted together, through socket joints, and forminga horizontal water-leg, on each side of the boiler, below the socket-j oints uniting the lower ends of said tubes; whereby communication is established for the enemation of water and steam between the interiors of the tubes and the water-legs, substantially as set forth 1 5. A water-'tub'e-boiler composed of vertical tubes united transversely near top and bottom by socket-joints and through -bolts and at bottom by, water-legs and throng bolts, and provided, with pipes in communication with said water legs and a steam-drum and having downcast pipes in communication with said'drum and water legs; substana tiallyas set forth. v

G. A Water-tube-beiler composed of vertical tub-es unite-d transversely near top and bottom by socket-joints and through-bolts and at bottom by water leg's and throughbolts, and provided, at their tops, with pipes in lowing named parts in combination: vertical tubes provided at or near their bottoms with socket-joints; annular end-pieces, as g; bolts passing through said socket-joints and endpieces; short sections as h, connected to said end-pieces and forming water-legs and provided with socket joints; bolts passing through said sections; a steam-drum; pipes leading from said tubes to said drum; and downcast pipes leading from said drum, through said end-pieces, to said water-legs.

AUGUSTUS BAILEY. v ELIAS M. JOHNSON. Witnesses:

STEPHEN W. BALDWIN, THos. S. WILLIAMS. 

